undo(): Boolean; (JadeRichText) undo(): Integer; (JadeTextEdit)
The undo method of the JadeRichText class undoes the last edit operation in the receiver control and returns true if the operation was undone or it returns false if the undo operation failed. You can undo up to 100 edit or format actions in a rich text control.
The undo method of the JadeTextEdit class undoes the last operation that was undone in the receiver control and returns zero (0). There is no limit to the number of undo actions in a text edit control.